Duplex nozzle for locomotives



R. R. BUSH ET AL DUPLEX NOZZLE FOR LOCOMOTIVES Sept. 18, L928.

Filed Oct. 1926 4 Sheets-Sheet 05675 Z3 flai A INVENTORS .fimsk aka ATTORNEYS Sept. 18, 1928.

R. R. BUSH ET AL DUPLEX NOZZLE FOR LOCOMOTIVES Filed Oct. 6, 1926 4 Sheets-Sheet 2 1205 i 1%."%%% wife; Wfla/fie 5 m w ATTORNEYS.

Sept. 18, 1928. 1,684,791

I R. R. BUSH ET AL v DUPLEX NOZZLE FOR LOCOMOTIVES Filed Oct. 6. 1926 4 Sheets-Sheet 3 2205 iz f k $2) k5 UMZJZZQS Wig/6e Sept. 18, 1928. 1,684,791

R. R. BUSH ET AL DUPLEX NOZZLE FOR LOCOMOTIVES Filed Oct. 6, 1926 4 Sheets-Sheet 4 gfi I b .IIHIIH. .n 'gu!p HIIl||:!! P "1 a MIME b I m y.) I, I,

a v I V N 9 ulll INVENTORS Charles 772x756 g ATTORNEYS.

i; I iioam lilimsk 25 1 Figure 8'; is

Patented Sept. 18, 1928 res ROBERT R. BUSH AND cnAnr-ins w. BAKE, or :CHICAGO, rumors, .sssienons T PATENT oF-FicE';

HIKE-NATIONAL coivirAmr, or onroaco; minors, A oonronn'rron on NEW JERSEY.

DUPLEX 'nozztn non 'iioooiuo'nvns 7 Application .fi'lerl' October 6, 1926. SeriaiNo'. 139,951

l controlling the discharge of the locomotive exhaust pipe. Another object is the provision of a duplex or multiple nozzle whereby,

selectively, a plurality of nozzles of different sizes may be al gned with the discharge end of the locomotive exhaust pipe. Another ob ject is the provision of such a multiple nozzle.

which'is easily controlledand which is preferably controllable from the exterior of. the locomotive. Other objects will appear from time to time in the course of the specification and claims. Y Y

We illustrate our invention more or less diagrammatically in the accompanying drawings,.wherein- F igure 1 is a section through the forward portion of a locomotive, with parts in elevation Figure 2 is a'front elevation of the locomotive;

a vertical transverse section through the structure shown in Figure 2;

Figure sis-a verticalsection onanenlarged scale through the end portion of the exhaust pipe or stand;- i

Figure 5 is a section on the line 55 of Figure 4; v

' Figure 6 is a section similar to- Figure 5- with. the duplex nozzle in the alternative position ,1 v p Figure 7 is a detail section illustrating the external control"; and

Figure 8 is a plan view. of the structuresli-own in Figures-4:, 5' and 6.

Like parts are illustrated, by like symbols 40 throughout the-specification and claims.

A generally indicates the wall of the locomotive housing'and A the, forward closure thereof.

B- is, the exhaust pipe of thelocoino'tive,

4c namely the steam pipe through which is delivered the exhaust from the cylinders. B is any suitable terminal pipe section or stand, provided with the flange B whereby it is so cured to the end of the pipe B by means of the bolts B member B}- is provided with diametrically opposed outwardly projecting lugs B apertured as at B B? indicate stops.

or lugs outwardly projecting from theupper portion of the member 13 and each: provided tegral with which are the nozzle members (L and C The webs are provided withhub members C C centrally apertured as'at G G Passing through the apertureC isrthe trunnion member G whichis secured to OR for example by means of the nuts C and bolts (3 Similarly securedft o the member 0 is the plate 0 with the apertured boss C through which passes the shaft D, the end. of whichisadapted to serve as a trunnion penetrating one of the apertures Bi. C 4 indicates a pin whereby relative movement of the shaft D and the plate 0 is prevented.

6 C are lugs on the webs C, C opposed.

to: the surfaces B B of the lugs B Ihe shaft .1) extends forwardly through the for-. ward. wall A1 of. the locomotive housing and. through the sleeve D secured to the exterior thereof. D is any suitable. packing therein contained, held; for example by the. screw} threadedpackingmemberD D is any suitable lever. at end of the shaft D which is associated with any suitablestop-or travel:

limiting member D ,v preferably formed with terminal. holding notches the lever maybe sprung. r

E i-sany suitable apron or enclosure,structureinto which the exhaust pipe B is adapted to discharge E is the smoke. stack of the locomotive and E any suitable interior pet ticoat pipe therefor. V 1 Y The: upper face ofv the exhaust pipe-section B is shaped the arcof a circle; struck about DGyDT/ into which the center of the shaft D and trunnion. G as shown at B The lower face of the nozzle. members (3?, C are correspondingly shaped.

as at G to form close contact with the face v tive device nevertheless many changes might.

be made in the size, shape, number and disposition of parts without departing from the spirit and we therefore wish our drawings to be taken as in abroad sense illustrative and diagrammatic rather than as limiting us to our specific showing.

The use and operation of our invention are as follows:

In employing the exhaust steam of a 1000- motive, fen maintaining or controlling the draft of the locomotiveit frequently happens that conditions so vary that it is desirable to control the discharge of the exhaust. have therefore provided a duplex nozzle member by the employment of which we may increase or diminish the velocity of the steam or vaporldischarged from' the exhaust pipe.

1We il vention is not limited to the employment of lever 'D, whereby the engineer or fireman ustrate a duplex nozzle but it will be obvious that under some conditions a choice ofmore than two nozzles may be necessary and We wish it to be understoodthat our intwo nozzles only.

i In order to permit the quick and easy adjustment of the nozzles. We have provided the control shaft D with its external control mayalmost instantaneously vary the exhaust discharge by substitutingone nozzle for another. It is'highly advantageous thatthis ad justment be made from the exterior, since the 3 exhaust pipe and nozzle members are situated in a portion of the locomotive where the normal heat ma equal or exceed SOO F.

, We have illustrated a articularly advantageous structure where n the web or side 7 1 members C are formed integrally with the nozzlesC and G However if desired the same structure may be of two or more pieces.

The selective nozzle structure, mounted on the webs or segments C C, is trunnioned to the exteriorofthe exhaust pipe or stand member B the bearing portions being thus out of the line of t-ravelof the vapor or steam discharged." This is important, sinceiotherwise the metal of the bearing surfaces would rapidlybe affected? Owing to the high temperature, opposed bearing parts are subjected to unusually difficult wearing conditions. We therefore provide the removable trunnion member C Opposed to it is the end of the shaft D, which may of course be axially moved inwardly to compensate for wear, or

may be withdrawn, for example 'by're'moval' of the plate member C a In order to limit the movement of the duplexnozzle member we provide the stop lug B with its inclined faces B B". 3 Opposed to these facesare the lugs 0 and C respectively, on theoppositeiedges of the webs C and C Owing to theinclination of the op-' i posed surfaces of the various stops the stops are self-cleaning.

Our selective nozzle arrangement efliciently copes with draft variations. In practical use, the draft varies with the quality of fuel, a

smaller or more highly inclined or tapered nozzle being advantageous to compensate for the use of poor-fuel. The draft may also vary with different firemen, since some firemen run a deeper fire bed and need a sharper draft. lVhatever be the c ause of the variations, we provide an efficient, easily operated and externally controlled means for varying the draft by varying the velocity of discharge of the exhaust steam.

lVe claim: 4 A

1. The combination with a locomotive exf haust pipe of a multiple nozzle member pivoted thereto,a plurality of nozzles associated with said member, said member including Web sections extending downwardly aboutthe exhaust pipe and trunnioned to the exterior thereof. a

2. The combination with a locomotive exhaust pipe of a multiple nozzle member ex teriorly trunnioned thereto, and, means for rotating said member to position the individ& ual nozzles thereof selectively noperative relation with said exhaust pipe, and remov able trunnion members therefor. r 3." The combination with fl'lOCOIIlOtlVG exhaust pipe of a multiple nozzle member trunnioned upon said exhaust pipe, and. means,

operable from the exterior of the locomotive,

formoving it to position selectively the individual nozzles of said multiple nozzle members in operative relationwith said exhaust pipe, and stop means adapted tolimit the excursion of said nozzle member to predetermined limits. i i

at. The combination with haust pipe ofa multiple nozzle member'truna locomotive ex:

nioned' thereupon, a plurality of nozzles asso-' ciated with said mcmber,means for rotating said member to position said nozzlestselectively inoperative relation with the exhaust multiple nozzle member and the exhaust pipe, adapted to limitthe movement of saidnozzle 'pipe,"and opposed fixed stop members on the member at the extremities of its excursion, to V ahgnthe individual nozzleswith the exhaust ing the nozzle in register with the end thereof independent of the trunnion. V 1 l 6. The combinationwith' an exhaust pipe for locomotives and the like .of a removable nozzletherefor, a trunnion supporting the nozzle when out of working relationwith the exhaust pipefmeans interposed between the avlien the nozzle and exhaust pipe arevin line and to force the nozzle axially against the s end of the exhaust pipe responsive to move ment of the axis of the trunnion. Signed at Chicago, in'the county of Cook,

and State of Illinois, this 27th day of September, 1926.

- ROBERT R. BUSH. CHARLES W. .DAKE. 

